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    Subject[RFC][PATCH V2 3/3] tegra: add pwm backlight device tree nodes
    Date
    Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
    ---
    arch/arm/boot/dts/tegra20-ventana.dts | 31 +++++++++++++++++++++++++++++++
    arch/arm/boot/dts/tegra20.dtsi | 2 +-
    2 files changed, 32 insertions(+), 1 deletion(-)

    diff --git a/arch/arm/boot/dts/tegra20-ventana.dts b/arch/arm/boot/dts/tegra20-ventana.dts
    index be90544..c67d9e1 100644
    --- a/arch/arm/boot/dts/tegra20-ventana.dts
    +++ b/arch/arm/boot/dts/tegra20-ventana.dts
    @@ -317,6 +317,37 @@
    bus-width = <8>;
    };

    + backlight {
    + compatible = "pwm-backlight";
    + brightness-levels = <0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 255>;
    + default-brightness-level = <12>;
    +
    + pwms = <&pwm 2 5000000>;
    + pwm-names = "backlight";
    + power-supply = <&backlight_reg>;
    + enable-gpios = <&gpio 28 0>;
    +
    + power-on-sequence = "REGULATOR", "power", <1>,
    + "DELAY", <10>,
    + "PWM", "backlight", <1>,
    + "GPIO", "enable", <1>;
    + power-off-sequence = "GPIO", "enable", <0>,
    + "PWM", "backlight", <0>,
    + "DELAY", <10>,
    + "REGULATOR", "power", <0>;
    + };
    +
    + backlight_reg: fixedregulator@176 {
    + compatible = "regulator-fixed";
    + regulator-name = "backlight_regulator";
    + regulator-min-microvolt = <1800000>;
    + regulator-max-microvolt = <1800000>;
    + gpio = <&gpio 176 0>;
    + startup-delay-us = <0>;
    + enable-active-high;
    + regulator-boot-off;
    + };
    +
    sound {
    compatible = "nvidia,tegra-audio-wm8903-ventana",
    "nvidia,tegra-audio-wm8903";
    diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
    index 405d167..67a6cd9 100644
    --- a/arch/arm/boot/dts/tegra20.dtsi
    +++ b/arch/arm/boot/dts/tegra20.dtsi
    @@ -123,7 +123,7 @@
    status = "disabled";
    };

    - pwm {
    + pwm: pwm {
    compatible = "nvidia,tegra20-pwm";
    reg = <0x7000a000 0x100>;
    #pwm-cells = <2>;
    --
    1.7.11.1


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